本文件规定了用激光吸收光谱法测定上游地区工作现场天然气中硫化氢含量的方法。以摩尔分数表示的分析范围为10 × 10？6%至20%。根据特定的仪器要求，分析范围可以扩展到更高的含量。

This document specifies a method for the determination of hydrogen sulfide content in working field natural gas of upstream area by laser absorption spectroscopy. The analytical range expressed as mole fraction is 10 × 10^？6 to 20 %. The analytical range can be expanded to higher content with specific instrument requirements.